Answer:
A
Step-by-step explanation:
Two number cubes are rolled.
The list of all 36 possible outcomes when rolling two dice is
(1,1), (1,2), (1,3), (1,4), (1,5), (1,6),
(2,1), (2,2), (2,3), (2,4), (2,5), (2,6),
(3,1), (3,2), (3,3), (3,4), (3,5), (3,6),
(4,1), (4,2), (4,3), (4,4), (4,5), (4,6),
(5,1), (5,2), (5,3), (5,4), (5,5), (5,6),
(6,1), (6,2), (6,3), (6,4), (6,5), (6,6).
The sum of 3:
(1,2) and (2,1)
The sum of 9:
(3,6), (4,5), (5,4) and (6,3)
So, the number of all favorable outcomes is 2 + 4 = 6
The probability is
[tex]\dfrac{6}{36}=\dfrac{1}{6}[/tex]
